Question

所以我已经使用UIViewRepresentable协议和以下功能绘制了Mapbox地图：

func makeUIView(context: Context) -> MGLMapView {
    
    let map = MGLMapView()
    DispatchQueue.main.async {
        map.styleURL = self.mapStyle
        map.delegate = context.coordinator
        map.showsUserLocation = true
        map.attributionButtonPosition = .topLeft
        map.logoViewPosition = .topLeft
        map.logoViewMargins.y = 15
        map.logoViewMargins.x = 95
        map.logoViewMargins.x = 12
        map.attributionButtonMargins.x = 100
        map.attributionButtonMargins.y = 15

        self.configure(map)
    }
    return map
}

唯一的问题是，因为我要对y边距的值进行硬编码，所以在多个设备上定位都不理想。我想使用GeometryReader来访问safeAreaInsets，然后使y padding成为该函数。有谁知道该怎么做？

Answer 1

您可以将GeometryProxy作为视图可表示构造函数的参数传递，如下所示

struct ContentView: View {
    var body: some View {
        GeometryReader {
            DemoView(proxy: $0)
        }
    }
}

struct DemoView: UIViewRepresentable {
   let proxy: GeometryProxy

   func makeUIView(context: Context) -> MGLMapView {
      // use self.proxy.size here
   }

   // ... other code
}

在SwiftUI中的makeUIView中设置的值中访问GeometryReader

1 个答案: